Way back when I also wasted alot of time and money with tanks, Constantely purchasing something new to try to get there conditions perfect or upgrading, eventually I went to a tub and I saw a 200 percent improvement in everything. Feeding response, husbandry conditions, ease of maitenence, everything was so much better I will never think twice about going back to a tank. And to think all that from a 7 dollar tub.
There are pros and cons to each one so weigh them in your head and deciede for yourself what you want, its your snakes and your decision.